Spar is the only country wide one I can think of off hand. Most of the big companies went to W2. A lot of the small regional companies are still using IC's. If you list in the old NARMS , which is now World Alliance, they look on there when a one shot or small cycle job comes up. I had a great 2 store cycle job for a year that way. Stericycle may be IC also. Not sure about that one though.
Happy hunting.